1. Department of Veterinary Surgery and Animal Reproduction, Department of Veterinary Clinics, São Paulo State University (Unesp), School of Veterinary Medicine and Animal Science, 18618-681 Botucatu, São Paulo, Brazil
2. Department of Veterinary Surgery and Anesthesiology, Faculty of Veterinary Medicine, Universidade do Oeste Paulista, 19067-175 Presidente Prudente, Brazil